34 
Proceedings of the Koyal Society of Edinburgh. [Sess. 
LITERATURE. 
(1) Bresslau, “Eine neue Art der Marinen Turbellariengattung Polycystis aus 
dem Susswasser,” Zool. Anz ., Bd. xxx., 1906. 
(2) Du Plessis, Zool. Anz., xviii. 
(3) . Yon Graff, (1) Monographie der Turbellarien Rliabdocoelide, 1882 ; (2) 
“Marine Turbellarien Orotavas und der Kiisten Europas,” Zeit.f. Wiss. Zool., Bd. 
Ixxxiii., 1905. 
(4) Hallez, “Gyrator Notops,” Zoologie Descriptive, Paris, 1900. 
(5) Braun, Die Turbellarien des Livlcinds, Dorpat, 1885. 
(6) Vejdovsky, Zeit. filr Wise. Zool., Bd. lx., p. 1895. 
(7) Yon Graff, Monographie der Turbellarien, 1882; Braun’s Thierreicli : 
Turbellaria. 
(8) Fuhrmann, “Der Turbellarien der Umgebung von Basel,” Revue Suisse de 
Zoologie, 1894. 
(9) Schulze, Archiv fiir Naturge., 1849. 
(10) Yon Siebold, Lehrbuch der vergleichende Anatomie, 1845. 
(11) Zacharias, Biol. Stat. Plon., 1894, 1902. 
(12) Braun, Die Rhabdocoeliden Turbellarien Livland , 1885. 
(13) Yon Graff, Turbellaria, 1882. 
(14) Jensen, Turbellaria ad litora Norvegia occidentalia, 1878. 
(15) Du Plessis, G., “Mesostomum Morgiense,” Bull. Soc. Vaud ., tom. xiv., 
1876. 
FIGURES. 
Plate III . — Polycystis G-oetti. 
Fig. 1. General diagram outline, -jt Zeiss + 2 oc. 
Fig. 2. Ovaries opening into female atrium. 4 mm. + 6 comp. oc. 
Fig. 3. Bladder of excretory system. Zeiss 2 mm. apo. -h 6 comp. oc. 
Fig. 4. Transverse section through middle region of the body. Reduced J. 
4 mm. + 6 comp. oc. 
Fig. 5. Transverse section through posterior region. Reduced 4 mm. 4- 6 
comp. oc. 
Plate IV. 
Fig. 1. Transverse section through secrete reservoir and sperm reservoir. 
2 mm. + 6 comp. oc. Reduced J. 
Fig. 2. Following section to 6, showing secrete reservoir passing by chitinous 
tube into the ductus seminales. 2 mm. + 6 comp. oc. Reduced J. 
Fig. 3. Early oocyte in the ovary of Monotus. 2 mm. + 6 oc. 
Fig. 4. Late stage. 
Fig. 5. Cocoon. A + 6 oc. 
op. bl. opening of bladder. 
bl. bladder. 
coc. cocoon. 
ect. ectoderm. 
lat. tr. lateral trunk, water-vascular 
system. 
ov. ovary. 
ph. pharynx. 
pr. proboscis. 
sec. res. secrete reservoir. 
sp. res. sperm reservoir. 
sp. spermatozoa. 
ut. uterus. 
v. d. vas deferens. 
(. Issued separately December 24, 1907.) 
